Initial checkin of gRPC to third_party/

third_party/grpc/examples/python/route_guide/route_guide_resources.py

-# Copyright 2012, Google Inc.
+# Copyright 2015, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
 # in the documentation and/or other materials provided with the
 # distribution.
 #     * Neither the name of Google Inc. nor the names of its
 # contributors may be used to endorse or promote products derived from
 # this software without specific prior written permission.
 #
 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+"""Common resources used in the gRPC route guide example."""
 
-_GOODBYE_MESSAGE = u'Goodbye'
+import json
+
+import route_guide_pb2
 
 
-def web_socket_do_extra_handshake(request):
-    request.ws_extension_processors = []
+def read_route_guide_database():
+  """Reads the route guide database.
 
-
-def web_socket_transfer_data(request):
-    while True:
-        line = request.ws_stream.receive_message()
-        if line is None:
-            return
-        if isinstance(line, unicode):
-            request.ws_stream.send_message(line, binary=False)
-            if line == _GOODBYE_MESSAGE:
-                return
-        else:
-            request.ws_stream.send_message(line, binary=True)
+  Returns:
+    The full contents of the route guide database as a sequence of
+      route_guide_pb2.Features.
+  """
+  feature_list = []
+  with open("route_guide_db.json") as route_guide_db_file:
+    for item in json.load(route_guide_db_file):
+      feature = route_guide_pb2.Feature(
+          name=item["name"],
+          location=route_guide_pb2.Point(
+              latitude=item["location"]["latitude"],
+              longitude=item["location"]["longitude"]))
+      feature_list.append(feature)
+  return feature_list